This name is a synonym of Draba petrophila var. viridis (A.Heller) C.L.Hitchc..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Muhlenbergia 1: 27 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:283181-1.
This name was in version 1 of The Plant List, record kew-2777514.